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LIN SHU-YEN
shallow canals, or small reservoir ponds, communicating with the sea of the bay at high tide. As shown in figure 1, the leaching vat (V) is constructed near the centre of the saline with the concentrating fields (C1-C6) situated on both sides, and the storage tanks (S) and the drying or crystalizing ponds (D1-D6) on the front side.
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Figure 1. Diagram showing the arrangement of the different parts of a saline in which the salt is prepared by the leaching method.
+ C1-C concentration fields; D-D6 crystalization ponds; R, reservoirs for sea-water connected by a channel to the sea; S, brine storage tanks; V, sarthern vat for leaching; HC, canal leading brine into the crytalization ponds; LC, canal leading brine back from the crytalization ponds to the two storage tanks; PSS, soil impregnated with salt; T, trough into which the concentrated brine is bailed from the two storage tanks.
In the preparation of the salt the surface soil of the concentrating fields, to the depth of about 1½ inches, is loosened by a man-driven harrow (figure 2) and then sprinkled with sea-water from the canals (figure 1, R), once or twice a day. The harrowing